Table 3.
Multivariable Regression Results on the Components of Operative Time
| Variable | Impact in Minutesa | ||
|---|---|---|---|
| Pre-procedure | Procedure | Post-procedure | |
| BMI (10 unit increments) | + 2.4 | +3.5 | + 0.5 |
| Age (10 year Increments) | -- | − 3.5 | + 0.3 |
| Male Gender | − 1.0 | + 17.4 | |
| Race | |||
| White (reference) | 0 | 0 | 0 |
| African American | -- | + 5.2 | + 0.9 |
| Other | -- | -- | -- |
| Total Number of Comorbidities | + 1.0 | -- | -- |
| Zubrod Score | |||
| 0 (reference) | 0 | 0 | 0 |
| 1 | -- | + 3.5 | -- |
| 2 | -- | + 5.2 | -- |
| >3 | -- | -- | -- |
| Smoking Status | |||
| Never (reference) | 0 | 0 | 0 |
| Former | -- | -- | -- |
| Current | -- | -- | -- |
| Preoperative Chemotherapy | + 2.4 | + 8.7 | -- |
| Preoperative Radiation Therapy | -- | + 19.2 | -- |
| Steroid Use | -- | -- | -- |
| FEV1 Predicted, % | -- | − 1.7 | − 0.2 |
| Thoracotomy | + 2.9 | − 8.7 | -- |
| Mediastinoscopy | − 7.3 | + 52.2 | + 1.4 |
| Wedge Resection | + 15.7 | − 0.5 | |
a
Only significant (p<0.01) results shown; BMI – body mass index; FEV1 – forced expiratory volume in one second